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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. 10-37 (21) days






2. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.






3. Contains and regulates the temp of the testes for sperm production






4. Completes uterine growth initiated by estrogen and prepares the uterus for nourishment of developing embryo if pregnancy occurs - supports pregnancy by maintaining quiescent state of reproductive tract and suppresses mating behavior - prevents ovulat






5. Way to know everything is alright with the breeding male






6. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).






7. The more stressed out the male is - the less sperm he is going to produce






8. 114 days






9. Contains and regulates the temp of the testes for sperm production






10. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.

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11. Provide nourishment for the developing sperm






12. When are steers and heifers weaned from bottle feeding?






13. What makes the milk flow through the mammary glands?






14. (LH) stimulates the Leydig cells to produce testosterone






15. Days which have increasing daylight hours

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16. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co






17. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract






18. What makes the milk flow through the mammary glands?






19. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING






20. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood






21. Luteolysis happens because of the ____________ hormone






22. Failure to have both testis (gonads) descend






23. 16-20 hours






24. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.






25. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.






26. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.

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27. 19-23 (21) days






28. Larger the cow - more milk is produced; smaller the cow - less milk is produced






29. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat






30. Failure to have one testis (gonad) to descend






31. Provide nourishment for the developing sperm






32. To remove/separate testicles from animal's body before animal reaches puberty






33. 2 month growth cycle. stored in the epididymis of the bull






34. Sperm is produced here






35. 114 days






36. 30 hours after estrus begins






37. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total






38. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed






39. Scar tissue plugs up chambers of udder






40. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)






41. 1-3 days






42. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total






43. FEED






44. 45-60 days after breeding; re-breed as required






45. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm






46. 26 hours after estrus begins






47. What about the sperm for a bull which has been castrated but still has testicles?






48. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood






49. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.






50. Not under a timeline - cow can not be sold as steak